Knitting machine



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T. s. HAYHURST KNITTING mfcHINE Filed April 1s, -1944 18 Sheets-Sheet 2 INVENToR T/zomas S. Ha kurs# March 5, 1946. T. s. HAYHURST .2,395,817

`KNITTING MACHINE Fld April 15, 1944 18 Sheets-Sheet 3 0R 93' K T hamas Hayhurs f ATTORNEYS v March 5, 1946. r.4 s. HAYHuRsT 2,395,817

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KNITTING' MACHINE Filed April 13, 1944 18 Sheets-Sheet 5 lNvENToR Thomas S. Hal/'vh urs ATTORNEYS n March 5y 1946. T. s. HAYHURST 2,395,817

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BY l v4? r wv/ ATTORNEY March 5, 1946. T s* HAYHURST 2,395,817

KNITTING MACHINE Filed Aprilia, 1944 18 sheets-sheet 7 INVENTOR Tgmas S. Hayhurs @wf March 5, 1946.

T. s. HAYHURST KNITTING MACHINE l Filed April 15, 1944 V 18 Sheets-Sheet 8 March 5, 1946'. vT. s. HAYHURsT 2,395,817

KNITTING MACHINE Filed April 15, 1944- 18 sheets-sheet 9 INVENToR Tlg 11- March 5, 1946. T.l s. HAYHURST 2,395,817

KNITTING MACHINE Filed April 13, 1944 18 Sheets-Shea?. 11

INVENTOR Thomas jaykurs @a/mw@ March 5, `1946.

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March l5, 1946. T. s. HAYHuRsT KNITTING MACHINE 18 sheets-sheet 13 Filed April 15, 1944-i INVENTOR i. yfzul's B ATTORN S March 5, 1946. T. s. HAYHURsT KNI/TTING MACHINE Filed April '13, 1944 18 sheets-sheet 14 R w s oh E# amv m2 m y /N n mm MH@ 4m r////////// x S. Mw .i\..,....H.,...,.,.` y, :rv: furl d\1\\\ l ed Y.

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INVENTOR T/wmfaas' A5', Hay/zumi- March5,'1946.- T. s. HAYHURST '2,395,817

KNITTING MACHINE' l Filed April 13, 1944- 18 Sheets-Sheet 16 L I I l. I. I I l. I. .l I I I l I l I I I l I I Thomas AS'. Hayhzu's BY I n v MMX ATTORNEYS March 5, 1946. T, s, HAYHURs-r l 2,395,817

KNITTING MACHINE Filed April 13, 1944 18 Sheets-Sheet 17 INVENTOR Themas S. Hay

BY l s) 65 f ATTORNZSL7 March 5, 1946. r. s. HAYHuRsT I f y 2,395,817

KNITTING MACHINE l Filed April 15, 1944 18 sheets-sheet `18 INVENTOR -Thomas Hay/larsl' A BY l MfATToRN/d M Patented Mar. 5, 1946 KNITTIN G MACHINE Thomas S. Hayhurst, Belle Harbor, N. Y., asslgnor I to Max Nydegger, Summit, N. J.

Application April 13, 1944, Serial No. 530,764

28 Claims.

The present invention relates to an improvement in knitting machines. Objects thereof have been to provide improved mechanism for conditioning or positioning the needle jacks in relation to the stitch cams in a links-links or knitpurl type of knitting machine, more particularly where the stitches are formedby devices operating separately from the needle positioning devices; to provide means for positioning a group or groups of needles and their corresponding needle jacks in an initial phase of the knitting cycle so that the needles may be actuated to complete the cycle by relatively simple and effective stitch cams and operating devices therefor; and to provide means more completely controllable and thus more ilexible to permit a wider range of selection than that afforded by previously known machines as between needles and/or groups of needles to be rendered active or to be idled as desired.

One embodiment of my invention in a form adapted for use in an automatic multiple links knitting machine is described in the following specication land illustrated in the appended drawings in which:

Figure 1 is a view partly in plan and partly in horizontal section of a right end portion of a full automatic knitting machine embodying the improved mechanism for positioning orconditioning the needle jacks in relation to the stitch cams; Figure 2, a fragmentary View on the line 2-2 of Figure 1 showing the control link associated with with some parts removed and some broken away; Figure 10. an enlarged front elevation, with parts in longitudinal vertical section and other parts broken away, showing more clearly jacquard shaft actuating devices at the left end of the machine shown in Figure 1, jack positioning devices, and stitch'length setting devices;

Figure 11, a transverse vertical sectiton on the line ll-II of Figure l0;

Figure 12, a transverse vertical section on the line I2-I2 of Figure 10; l

Figure 13, a horizontal section on the line l3--I 3 of Figure l2;

Figure 14, a graph of the periodic in and out os-v cillation of the push-in bar for one cycle of normal knitting; 'l

Figure 15. a graph of the in and out motions of the front push-in bar (solid lines) and of movement of the adjustable controlling cam (dotted lines) into and out of operative position for one cycle of jacquard or pattern change;

Figure 16, a graph of the in and out motions of the front push-in bar and of movements of the adjustable -controlling cam into and out of operation for one decking cycle wherein the operative position of the adjustable controlling cams for jacquard change (dotted line) is maintained for an extended period in decking (broken lines) Movement of the push-out bar is shown superposed on the out movement of the push-in bar during decking;

Figure 4, an enlarged fragmentary plan view of E to more clearly show parts of needle jack condi,`

tioning devices;

rFigure 8, an enlarged end elevation of part of the left end of the machine shown in Figure 1;

Figure 9, an enlarged plan View of parts of the left end portion of the machine shown in Figure 1 Figure 17', a detail of the rolling key forming part of the clutch device on shaft 243, Figure 13; Figures 18, 19 and 20, fragmentary transverse sectional views of the bed plates and connecting devices showing a'cycle of positioning movement of the push jack and its effect in conditioning the needle jack and needle for links-links operation; Figures 21, 22 and 23, similar views showing a cycle of positioning movement of the pushjack 4and its effect in conditioning the needle jack and needles in the front bed for straight knitting;

Figures 24, 25 and 26, similar views showing a cycle of positioning movement` of the push jack and its eiect in conditioning the needle jack and 4needles in the rear bed for straight knitting;

Figure 27, a simplified section illustrating the relative positions of the parts shown when .a main jack is raised by the gathering bar to condition the push jack and needle ja'ck for links-links operation;

Figure A'28, a simplified section illustrating the relative positions of-the parts when a main jack and corresponding push jack are conditioned for straight knitting;

Figure 29,"a simplied section illustrating the relative positions oi' the parts with the push Jack conditioned for idling the corresponding needle jack and needle;

Figure 30, a. view partly in longitudinal vertical section on the line 30-30 of Figure 7 and with portions broken away and with some parts retioning position by the selector bar, the fastening bar and a lift plate; and

Figure 35, a view in elevation of a typical proille or jacquard bar.

My invention as exempliiied in the drawings,

includes devices for moving the needle jacks 28, Figures 4 and 6, into position to be actuated by reciprocating movement of the stitch cams 34 and 35 in knitting and for moving selected needle jacks inwardly from neutral and back inthe iirst phase of the decking cycle. These are conveniently combined with suitable selecting devices for determining which needle Jacks and needles shall be so moved, whereby the action of each needle 23 is accurately controlled to produce predetermined pattern features Rear push-in bar The needle position controlling devices include,

in both beds, the needle jacks 28 having end butts 29 thereon. Back of the rear bed (right, Figure 3), a rear jack push-in bar 9| is mounted on and moves forward and back with an oscillatable angle bar |92 secured to end bearing blocks 204 which slide on the upwardly exposed surfaces 2ll4a ofthe frame, Figure 12.

The forwardly exposed longitudinal edge of said rear push-in bar 9| engages end butts 29 of said rear bedv needle jacks 28 to advance said jacks, and needles, if any, engaged therewith, inwardly, i. e. toward the narrow space between the inner edges of the front and rear beds, Figures 18 and 19, and into position for said needle jacks 28 to be engaged and actuated by the rear stitch cam 35, Figure 6.

The rack skip slots or openings |9|a, Figure 1, in said exposed edge opposite end positioned needle jacks 28 in each knitting section of the rear bed have a function in connection with racking,

-whereby the butts 29 of needle jacks 28 aligned with said slots are not engaged by said edge and .hence are not moved inwardly when the push-in bar I9| is advanced to push the remaining jacks 28 inwardly.

Where racking over two needles, for example, takes place in acourse employing less than all the needles in each section, it is clear that with the active needles conditioned for one and one operation, as is customary in racking, certain active needles in' the rear bed will be 'brought into alignment with'certain Ainactive needles at rest v in the front bed. Thus, in each needle section,

one active end needle in the rear bed will come opposite an inactive needle in the front bed'. The next normal lack and needle positioning motion, as by a rear push-in .bar 9|, Figure 1, would therefore cause said active rear bed needle to be acoger? pushed into tlie slot occupied by said inactive front bed needle. l

To avoid this result, said bar |9I is mounted for longitudinal adjustment with the widening v and narrowing devices and has portions cut away to provide slots or openings I9 Ia, of suitable width in its front edge, the opening shown being two needles wide. In each knitting course, each of said openings 4I9|a is maintained, byacljustment ,10 of bar |9I, in position with at least a portion thereof opposite the needle bed slots holding the rrst two needles beyond the last needle working in the front bed.

To bring said slots i9la into proper position in l5 widening and narrowing, said push-in bar I9| is adjustablerlongitudinally of angle bar |92 along with a sliding nut |9y|b actuated bya screw shaft 646, Figure 3, connected to widening and narrowing devices, including shaft 315, Figure 1.

Front push-in bar In the front bed, a plurality of push jacks |93, Figures 3, 4, 7, 18,l9, 21 and 22, one in each needle groove, cooperate with andl control ,the eiective needle conditioning positions of corresponding needle jacks 28. For this purpose said push jacks |93 are actuated by a front push-in bar |95, mounted on an angle bar |96. vVarious motions are imparted to saidpush-in bar |95 for different purposes by cam means to be described,

, Figures 14, 15 and 16.

As seen in Figures 5, 7, 18 and 2l, each push jack |93 has a short tapered nib |91 and a longer tapered nib |98 extending upwardly from its upper edge. By suitably adjusting its relation to push-in bar |95 when in pattern change posi-- tion, each of said push jacks |93 is selectively conditioned either to escape engagement with push-in bar |95 and thus remain idle or to present one or another of. said nibs for engagement by said push-in bar |95 to advance a corresponding needle jack 28 into one or another of its active stitch cam engaging positions.

In knitting successive courses without pattern change, said push-in bar |95 is moved in regular periodic sequence inwardly toward the right, Figure 14, from neutral or dwellifull line) position to the dotted line position, Figurej, and then back to neutral. On each said inward movement of push-bar |95 the active push jacks |93 engaged thereby, either through their long nibs |98 or their short nibs |91, are similarly moved; and the corresponding needle jacks 28 are vthus repeatedly positioned to be actuated by the stitch cams 34 in 'forming said successive courses.

In connection with jacquard changes, Figure 15, and in the decking cycle, Figure 16, push-in bar |95 has a special return movement from said dotted line position through neutral and then outward to the broken lineI or change position, Figure 7, This motion is faster and greater in extent than the normal periodic return to neu-g trai (full line).

At the end of a decking cycle, Figure 16, said push-in bar |95 has a special needle positioning motion inwardly from neutral to the dotted line position Figure 7 which begins earlier and proceeds more slowly than said regular periodic inward motion. 'I'he return from this inward motion to neutral initiates the resumption of normal knitting or the regular periodic sequence above referred to.

Retractor or delires-sor bar A retractor or depressor bar |94 is mounted on 

